What went wrong with these cam bearings?

Thanks for the info guys. I had a trusted mopar man rebuild this engine for me and I sometimes think that you are better off to do things yourself, so there is no one else to blame. I'll be pulling the block out this weekend and going over a chevvy boys house to break her down and see what else might be wrong. The reason I'm going to take it there is because he is used to seeing engine problems. haha